It is clearly time for this gentleman to live under professional care. I have taken care of both patients and relatives with dementia, and it never gets better. For his own safety, and the public, he has to be watched around the clock.
I pray for that poor woman. I've been burned by a very mild acid, it hurt like hell for a long time. I cannot imagine what it would be like to be burned by a strong acid that may have taken my eye. Her suffering must be incredible, and even if she makes it she will forever bear the scars inflicted by her own father. There's no win there for her, ever.